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namespace AIStudio.Provider.Fireworks; | ||
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/// <summary> | ||
/// The Fireworks chat request model. | ||
/// </summary> | ||
/// <param name="Model">Which model to use for chat completion.</param> | ||
/// <param name="Messages">The chat messages.</param> | ||
/// <param name="Stream">Whether to stream the chat completion.</param> | ||
public readonly record struct ChatRequest( | ||
string Model, | ||
IList<Message> Messages, | ||
bool Stream | ||
); |
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namespace AIStudio.Provider.Fireworks; | ||
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/// <summary> | ||
/// Chat message model. | ||
/// </summary> | ||
/// <param name="Content">The text content of the message.</param> | ||
/// <param name="Role">The role of the message.</param> | ||
public readonly record struct Message(string Content, string Role); |
160 changes: 160 additions & 0 deletions
160
app/MindWork AI Studio/Provider/Fireworks/ProviderFireworks.cs
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using System.Net.Http.Headers; | ||
using System.Runtime.CompilerServices; | ||
using System.Text; | ||
using System.Text.Json; | ||
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using AIStudio.Chat; | ||
using AIStudio.Settings; | ||
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namespace AIStudio.Provider.Fireworks; | ||
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public class ProviderFireworks() : BaseProvider("https://api.fireworks.ai/inference/v1/"), IProvider | ||
{ | ||
private static readonly JsonSerializerOptions JSON_SERIALIZER_OPTIONS = new() | ||
{ | ||
PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower, | ||
}; | ||
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#region Implementation of IProvider | ||
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/// <inheritdoc /> | ||
public string Id => "Fireworks.ai"; | ||
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/// <inheritdoc /> | ||
public string InstanceName { get; set; } = "Fireworks.ai"; | ||
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/// <inheritdoc /> | ||
public async IAsyncEnumerable<string> StreamChatCompletion(IJSRuntime jsRuntime, SettingsManager settings, Model chatModel, ChatThread chatThread, [EnumeratorCancellation] CancellationToken token = default) | ||
{ | ||
// Get the API key: | ||
var requestedSecret = await settings.GetAPIKey(jsRuntime, this); | ||
if(!requestedSecret.Success) | ||
yield break; | ||
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// Prepare the system prompt: | ||
var systemPrompt = new Message | ||
{ | ||
Role = "system", | ||
Content = chatThread.SystemPrompt, | ||
}; | ||
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// Prepare the Fireworks HTTP chat request: | ||
var fireworksChatRequest = JsonSerializer.Serialize(new ChatRequest | ||
{ | ||
Model = chatModel.Id, | ||
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// Build the messages: | ||
// - First of all the system prompt | ||
// - Then none-empty user and AI messages | ||
Messages = [systemPrompt, ..chatThread.Blocks.Where(n => n.ContentType is ContentType.TEXT && !string.IsNullOrWhiteSpace((n.Content as ContentText)?.Text)).Select(n => new Message | ||
{ | ||
Role = n.Role switch | ||
{ | ||
ChatRole.USER => "user", | ||
ChatRole.AI => "assistant", | ||
ChatRole.SYSTEM => "system", | ||
_ => "user", | ||
}, | ||
Content = n.Content switch | ||
{ | ||
ContentText text => text.Text, | ||
_ => string.Empty, | ||
} | ||
}).ToList()], | ||
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// Right now, we only support streaming completions: | ||
Stream = true, | ||
}, JSON_SERIALIZER_OPTIONS); | ||
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// Build the HTTP post request: | ||
var request = new HttpRequestMessage(HttpMethod.Post, "chat/completions"); | ||
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// Set the authorization header: | ||
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", requestedSecret.Secret); | ||
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// Set the content: | ||
request.Content = new StringContent(fireworksChatRequest, Encoding.UTF8, "application/json"); | ||
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// Send the request with the ResponseHeadersRead option. | ||
// This allows us to read the stream as soon as the headers are received. | ||
// This is important because we want to stream the responses. | ||
var response = await this.httpClient.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, token); | ||
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// Open the response stream: | ||
var fireworksStream = await response.Content.ReadAsStreamAsync(token); | ||
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// Add a stream reader to read the stream, line by line: | ||
var streamReader = new StreamReader(fireworksStream); | ||
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// Read the stream, line by line: | ||
while(!streamReader.EndOfStream) | ||
{ | ||
// Check if the token is canceled: | ||
if(token.IsCancellationRequested) | ||
yield break; | ||
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// Read the next line: | ||
var line = await streamReader.ReadLineAsync(token); | ||
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// Skip empty lines: | ||
if(string.IsNullOrWhiteSpace(line)) | ||
continue; | ||
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// Skip lines that do not start with "data: ". Regard | ||
// to the specification, we only want to read the data lines: | ||
if(!line.StartsWith("data: ", StringComparison.InvariantCulture)) | ||
continue; | ||
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// Check if the line is the end of the stream: | ||
if (line.StartsWith("data: [DONE]", StringComparison.InvariantCulture)) | ||
yield break; | ||
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ResponseStreamLine fireworksResponse; | ||
try | ||
{ | ||
// We know that the line starts with "data: ". Hence, we can | ||
// skip the first 6 characters to get the JSON data after that. | ||
var jsonData = line[6..]; | ||
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// Deserialize the JSON data: | ||
fireworksResponse = JsonSerializer.Deserialize<ResponseStreamLine>(jsonData, JSON_SERIALIZER_OPTIONS); | ||
} | ||
catch | ||
{ | ||
// Skip invalid JSON data: | ||
continue; | ||
} | ||
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// Skip empty responses: | ||
if(fireworksResponse == default || fireworksResponse.Choices.Count == 0) | ||
continue; | ||
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// Yield the response: | ||
yield return fireworksResponse.Choices[0].Delta.Content; | ||
} | ||
} | ||
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#pragma warning disable CS1998 // Async method lacks 'await' operators and will run synchronously | ||
/// <inheritdoc /> | ||
public async IAsyncEnumerable<ImageURL> StreamImageCompletion(IJSRuntime jsRuntime, SettingsManager settings, Model imageModel, string promptPositive, string promptNegative = FilterOperator.String.Empty, ImageURL referenceImageURL = default, [EnumeratorCancellation] CancellationToken token = default) | ||
{ | ||
yield break; | ||
} | ||
#pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously | ||
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/// <inheritdoc /> | ||
public Task<IEnumerable<Model>> GetTextModels(IJSRuntime jsRuntime, SettingsManager settings, string? apiKeyProvisional = null, CancellationToken token = default) | ||
{ | ||
return Task.FromResult(Enumerable.Empty<Model>()); | ||
} | ||
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/// <inheritdoc /> | ||
public Task<IEnumerable<Model>> GetImageModels(IJSRuntime jsRuntime, SettingsManager settings, string? apiKeyProvisional = null, CancellationToken token = default) | ||
{ | ||
return Task.FromResult(Enumerable.Empty<Model>()); | ||
} | ||
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#endregion | ||
} |
24 changes: 24 additions & 0 deletions
24
app/MindWork AI Studio/Provider/Fireworks/ResponseStreamLine.cs
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namespace AIStudio.Provider.Fireworks; | ||
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/// <summary> | ||
/// Data model for a line in the response stream, for streaming completions. | ||
/// </summary> | ||
/// <param name="Id">The id of the response.</param> | ||
/// <param name="Object">The object describing the response.</param> | ||
/// <param name="Created">The timestamp of the response.</param> | ||
/// <param name="Model">The model used for the response.</param> | ||
/// <param name="Choices">The choices made by the AI.</param> | ||
public readonly record struct ResponseStreamLine(string Id, string Object, uint Created, string Model, IList<Choice> Choices); | ||
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/// <summary> | ||
/// Data model for a choice made by the AI. | ||
/// </summary> | ||
/// <param name="Index">The index of the choice.</param> | ||
/// <param name="Delta">The delta text of the choice.</param> | ||
public readonly record struct Choice(int Index, Delta Delta); | ||
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/// <summary> | ||
/// The delta text of a choice. | ||
/// </summary> | ||
/// <param name="Content">The content of the delta text.</param> | ||
public readonly record struct Delta(string Content); |
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